Brazos River AuthorityCreated by the texas legislature in 1929 specifically for the purpose of developing and managing the water resources of an entire river basin , the brazos river authority develops and distributes water supplies , provides water and wastewater treatment , monwww.brazos.org

Colorado RiverSupports programs to clean up the river and develop public awareness of the quality of life provided by the river. site includes river reports , waste collection projects , and a calendar of events. www.coloradoriver.org

Guadalupe-Blanco River AuthorityBased in seguin , includes parts of 10 counties from kendall to calhoun and refugio. includes information on board , staff , and departments , water and recreation facilities , and water quality data. www.gbra.org

Red River Authority of TexasHeadquartered in wichita falls , covers parts of 43 counties from the panhandle to near texarkana. includes maps , water quality reports , and other basin data , and information on organization and services provided. www.rra.dst.tx.us